Could thermophotovoltaics be the key to clean energy?

Reactor (left) used to test the new thermal emitter; Gururaj Naik (right). Image: Gustavo Raskosky/Rice University)
Advances to thermophotovoltaic (TPV) systems, which convert heat into electricity via light, typically focus on PV cells. A new thermal emitter, however, boasts efficiencies of 60%.
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